/*
 * Fuel UX Wizard
 * https://github.com/ExactTarget/fuelux
 *
 * Copyright (c) 2012 ExactTarget
 * Licensed under the MIT license.
 */
 
(function($ , undefined) {
 
 
//var $ = require('jquery');
 
 
// WIZARD CONSTRUCTOR AND PROTOTYPE
 
var Wizard = function (element, options) {
 
var kids;
 
this.$element = $(element);
this.options = $.extend({
 
}, $.fn.wizard.defaults, options);
this.currentStep = 1;
this.numSteps = this.$element.find('li').length;
this.$prevBtn = this.$element.find('button.btn-prev');
this.$nextBtn = this.$element.find('button.btn-next');
 
kids = this.$nextBtn.children().detach();
this.nextText = $.trim(this.$nextBtn.text());
this.$nextBtn.append(kids);
 
// handle events
this.$prevBtn.on('click', $.proxy(this.previous, this));
this.$nextBtn.on('click', $.proxy(this.next, this));
this.$element.on('click', 'li.complete', $.proxy(this.stepclicked, this));
 
this.$stepContainer = this.$element.data('target') || 'body';
this.$stepContainer = $(this.$stepContainer);
 
};
 
Wizard.prototype = {
 
 
constructor: Wizard,
 
setState: function () {
 
var canMovePrev = (this.currentStep > 1);
var firstStep = (this.currentStep === 1);
var lastStep = (this.currentStep === this.numSteps);
 
// disable buttons based on current step
this.$prevBtn.attr('disabled', (firstStep === true || canMovePrev === false));
 
// change button text of last step, if specified
var data = this.$nextBtn.data();
if (data && data.last) {
 
this.lastText = data.last;
if (typeof this.lastText !== 'undefined') {
 
// replace text
var text = (lastStep !== true) ? this.nextText : this.lastText;
var kids = this.$nextBtn.children().detach();
this.$nextBtn.text(text).append(kids);
 
}
 
}
 
// reset classes for all steps
var $steps = this.$element.find('li');
$steps.removeClass('active').removeClass('complete');
$steps.find('span.badge').removeClass('badge-info').removeClass('badge-success');
 
// set class for all previous steps
var prevSelector = 'li:lt(' + (this.currentStep - 1) + ')';
var $prevSteps = this.$element.find(prevSelector);
$prevSteps.addClass('complete');
$prevSteps.find('span.badge').addClass('badge-success');
 
// set class for current step
var currentSelector = 'li:eq(' + (this.currentStep - 1) + ')';
var $currentStep = this.$element.find(currentSelector);
$currentStep.addClass('active');
$currentStep.find('span.badge').addClass('badge-info');
 
// set display of target element
var target = $currentStep.data().target;
//$('.step-pane').removeClass('active');
this.$stepContainer.find('.step-pane').removeClass('active');
$(target).addClass('active');
 
this.$element.trigger('changed');
 
},
 
stepclicked: function (e) {
 
var li = $(e.currentTarget);
 
var index = this.$element.find('li').index(li);
 
var evt = $.Event('stepclick');
this.$element.trigger(evt, {
step: index + 1
});
if (evt.isDefaultPrevented()) return;
 
this.currentStep = (index + 1);
this.setState();
 
},
 
previous: function () {
 
var canMovePrev = (this.currentStep > 1);
if (canMovePrev) {
 
var e = $.Event('change');
this.$element.trigger(e, {
step: this.currentStep, direction: 'previous'
});
if (e.isDefaultPrevented()) return;
 
this.currentStep -= 1;
this.setState();
 
}
 
},
 
next: function () {
 
var canMoveNext = (this.currentStep + 1 <= this.numSteps);
var lastStep = (this.currentStep === this.numSteps);
 
if (canMoveNext) {
 
var e = $.Event('change');
this.$element.trigger(e, {
step: this.currentStep, direction: 'next'
});
 
if (e.isDefaultPrevented()) return;
 
this.currentStep += 1;
this.setState();
 
}
else if (lastStep) {
 
this.$element.trigger('finished');
 
}
 
},
 
selectedItem: function (val) {
 
return {
 
step: this.currentStep
 
};
 
}
 
};
 
 
// WIZARD PLUGIN DEFINITION
 
$.fn.wizard = function (option, value) {
 
var methodReturn;
 
var $set = this.each(function () {
 
var $this = $(this);
var data = $this.data('wizard');
var options = typeof option === 'object' && option;
 
if (!data) $this.data('wizard', (data = new Wizard(this, options)));
if (typeof option === 'string') methodReturn = data[option](value);
 
});
 
return (methodReturn === undefined) ? $set : methodReturn;
 
};
 
$.fn.wizard.defaults = {
 
};
 
$.fn.wizard.Constructor = Wizard;
 
 
// WIZARD DATA-API
 
$(function () {
 
$('body').on('mousedown.wizard.data-api', '.wizard', function () {
 
var $this = $(this);
if ($this.data('wizard')) return;
$this.wizard($this.data());
 
});
 
});
 
 
})(window.jQuery);